Re: how to sort / swap rows

[muppet man <scott asofyet org>]

On Saturday, September 13, 2003, at 03:40 PM, Jens Luedicke wrote:

> I added a sort function to one of the columns in a ListStore
> and need to swap rows but gtk complains
> that I can't to it. (sorted model)
>
> how can I achive the desired effect? I don't
> know if it is exactly what I want/need, but I would
> try something like this.

my best guess is that the sort func is supposed to return 1, 0, or -1,  
and the model code will do the swapping for you, as the sorted model  
doesn't let you change the order from the outside.

indeed, poking through the source for gtk reveals a call to  
g_array_sort under the hood, with a proxy that returns the value from  
your supplied callback.  g_array_sort uses a GCompareFunc, which  
returns 1, 0, or -1, like the c library's qsort.

http://developer.gnome.org/doc/API/2.0/glib/glib-Doubly-Linked- 
Lists.html#GCompareFunc

--
muppet <scott at asofyet dot org>